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Finding the Fourth Proportional to 512,955.02, 769,432.52 and 138,978.02

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Solution

The fourth proportional to 512,955.02, 769,432.52 and 138,978.02 is: 208,467.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    512,955.02 : 769,432.52 = 138,978.02 : x
  2. Step 2: Convert to fraction form
    512,955.02/769,432.52 = 138,978.02/x
  3. Step 3: Cross multiply
    512,955.02x = 769,432.52 × 138,978.02
  4. Step 4: Simplify right side
    512,955.02x = 106,934,208,153.21
  5. Step 5: Solve for x
    x = 106,934,208,153.21/512,955.02
  6. Step 6: Final answer
    x = 208,467.03

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Similar ratio
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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.